eeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 35 
loleman (A. P.) — Continued. 
. The Iroquois beach in Ontario. 
Ont. Bur. Mines, Kept., 1904, pt. 1, pp. 225-244, 1904. 
, The northern nickel range [Ontario], 
Ont. Bur. Mines, Rept., 1904, pt, 1, pp. 192-222, 5 pis., 1904. 
Describes the topography, general geology, and the occurrence, character, and 
geological relations of nickel and iron ore deposits. 
The Sudbury nickel-bearing eruptive. 
Abstract: Geol. Soc. Am., Bull., vol. 15, p. 551, 1904; Science, new ser., vol. 
19, p. 526, 1904; Sci. Am. Suppl., vol. 57, p. 23446, 1904; Eng. & Mg. Jour., 
vol. 77, p. 73, 1904. 
oilier (Arthur J.). 
Tin deposits of the York region, Alaska. 
U. S. Geol. Surv., Bull. no. 225, pp. 154-167, 1 tig., 1904. 
Describes the general geology of the York region, and the occurrence and 
character of stream and lode tin deposits. 
The tin deposits of the York region, Alaska. 
U. S. Geol. Surv., Bull. no. 229, 61 pp., 6 pis., 5 tigs., 1904. 
Describes the general geology, the character and occurrence of sedimentary 
rocks of Silurian age and igneous rocks, and the character and occurrence in 
detail of tin-ore deposits and the mining operations. Gives a resume of the 
occurrence of tin in the United States and other parts of the world. 
The coal fields of Cape Lisburne, Alaska. 
Am. Geol., vol. 34, pp. 401-402, 1904. 
Gives a brief account of the situation and geologic age of the coal fields, and 
the occurrence and character of the coal beds. 
Ollins (Henry F.). 
I Notes on the wollastonite rock mass, and its associated minerals of 
the Santa Fe mine, State of Chiapas, Mexico. 
Mineral. Mag., vol. 13, pp. 356-362, 1904. 
Describes occurrence, origin, and crystallographic features of a rock mass of 
wollastonite. 
mistook (Frank M.). 
Ancient lake beaches on the islands in Georgian Bay. 
Am. Geol., vol. 33, pp. 312-318, 2 pis., 1 tig., 1904. 
Describes the occurrence and character of elevated beaches. 
(>mstock (Theo. B.). 
I Superficial blackening- and discoloration of rocks, especially in 
desert regions. 
Am. Inst. Mg. Engrs., Trans. (Lake Superior meeting, September, 1904), 4 
pp., 1904. (Advance separate.) 
Discusses the occurrence of these features and their explanation. 
hidra(G. E.). 
Stratigraphic delineation of the Benton and Niobrara formations of 
Nebraska. 
Abstract: Science, new ser., vol. 19, p. 925, 1904. 
